Show relative time of flags on hover

[pulseview.git] / pv / views / trace / flag.cpp

diff --git a/pv/views/trace/flag.cpp b/pv/views/trace/flag.cpp
index 64ef1047d03e6b5057753ccca7fe0a468aefee44..97b21be232888dc909fc36b4df9c573005815f39 100644 (file)
--- a/pv/views/trace/flag.cpp
+++ b/pv/views/trace/flag.cpp
@@ -19,11 +19,13 @@
 
 #include "timemarker.hpp"
 #include "view.hpp"
+#include "ruler.hpp"
 
 #include <QColor>
 #include <QFormLayout>
 #include <QLineEdit>
 #include <QMenu>
+#include <QApplication>
 
 #include <libsigrokcxx/libsigrokcxx.hpp>
 
@@ -57,7 +59,43 @@ bool Flag::enabled() const
 
 QString Flag::get_text() const
 {
-       return text_;
+       const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
+       if (ref_item == nullptr || ref_item.get() == this) {
+               return text_;
+       } else {
+               return Ruler::format_time_with_distance(
+                       ref_item->time(), ref_item->delta(time_),
+                       view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
+       }
+}
+
+QRectF Flag::label_rect(const QRectF &rect) const
+{
+       const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
+       if (ref_item == nullptr || ref_item.get() == this) {
+               return TimeMarker::label_rect(rect);
+
+       } else {
+               // TODO: Remove code duplication between here and cursor.cpp
+               const float x = get_x();
+
+               QFontMetrics m(QApplication::font());
+               QSize text_size = m.boundingRect(get_text()).size();
+
+               const QSizeF label_size(
+                       text_size.width() + LabelPadding.width() * 2,
+                       text_size.height() + LabelPadding.height() * 2);
+               const float top = rect.height() - label_size.height() -
+                       TimeMarker::ArrowSize - 0.5f;
+               const float height = label_size.height();
+
+               const pv::util::Timestamp& delta = ref_item->delta(time_);
+
+               if (delta >= 0)
+                       return QRectF(x, top, label_size.width(), height);
+               else
+                       return QRectF(x - label_size.width(), top, label_size.width(), height);
+       }
 }
 
 pv::widgets::Popup* Flag::create_popup(QWidget *parent)